/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

var _config = require("../config");

var __DEV__ = _config.__DEV__;

var _util = require("static/plugins/js/zrender/lib/core/util");

var createHashMap = _util.createHashMap;
var retrieve = _util.retrieve;
var each = _util.each;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

/**
 * Helper for model references.
 * There are many manners to refer axis/coordSys.
 */
// TODO
// merge relevant logic to this file?
// check: "modelHelper" of tooltip and "BrushTargetManager".

/**
 * @class
 * For example:
 * {
 *     coordSysName: 'cartesian2d',
 *     coordSysDims: ['x', 'y', ...],
 *     axisMap: HashMap({
 *         x: xAxisModel,
 *         y: yAxisModel
 *     }),
 *     categoryAxisMap: HashMap({
 *         x: xAxisModel,
 *         y: undefined
 *     }),
 *     // The index of the first category axis in `coordSysDims`.
 *     // `null/undefined` means no category axis exists.
 *     firstCategoryDimIndex: 1,
 *     // To replace user specified encode.
 * }
 */
function CoordSysInfo(coordSysName) {
    /**
     * @type {string}
     */
    this.coordSysName = coordSysName;
    /**
     * @type {Array.<string>}
     */

    this.coordSysDims = [];
    /**
     * @type {module:zrender/core/util#HashMap}
     */

    this.axisMap = createHashMap();
    /**
     * @type {module:zrender/core/util#HashMap}
     */

    this.categoryAxisMap = createHashMap();
    /**
     * @type {number}
     */

    this.firstCategoryDimIndex = null;
}
/**
 * @return {module:model/referHelper#CoordSysInfo}
 */

function getCoordSysInfoBySeries(seriesModel) {
    var coordSysName = seriesModel.get("coordinateSystem");
    var result = new CoordSysInfo(coordSysName);
    var fetch = fetchers[coordSysName];

    if (fetch) {
        fetch(seriesModel, result, result.axisMap, result.categoryAxisMap);
        return result;
    }
}

var fetchers = {
    cartesian2d: function (seriesModel, result, axisMap, categoryAxisMap) {
        var xAxisModel = seriesModel.getReferringComponents("xAxis")[0];
        var yAxisModel = seriesModel.getReferringComponents("yAxis")[0];
        result.coordSysDims = ["x", "y"];
        axisMap.set("x", xAxisModel);
        axisMap.set("y", yAxisModel);

        if (isCategory(xAxisModel)) {
            categoryAxisMap.set("x", xAxisModel);
            result.firstCategoryDimIndex = 0;
        }

        if (isCategory(yAxisModel)) {
            categoryAxisMap.set("y", yAxisModel);
            (result.firstCategoryDimIndex == null) &
                (result.firstCategoryDimIndex = 1);
        }
    },
    singleAxis: function (seriesModel, result, axisMap, categoryAxisMap) {
        var singleAxisModel =
            seriesModel.getReferringComponents("singleAxis")[0];
        result.coordSysDims = ["single"];
        axisMap.set("single", singleAxisModel);

        if (isCategory(singleAxisModel)) {
            categoryAxisMap.set("single", singleAxisModel);
            result.firstCategoryDimIndex = 0;
        }
    },
    polar: function (seriesModel, result, axisMap, categoryAxisMap) {
        var polarModel = seriesModel.getReferringComponents("polar")[0];
        var radiusAxisModel = polarModel.findAxisModel("radiusAxis");
        var angleAxisModel = polarModel.findAxisModel("angleAxis");
        result.coordSysDims = ["radius", "angle"];
        axisMap.set("radius", radiusAxisModel);
        axisMap.set("angle", angleAxisModel);

        if (isCategory(radiusAxisModel)) {
            categoryAxisMap.set("radius", radiusAxisModel);
            result.firstCategoryDimIndex = 0;
        }

        if (isCategory(angleAxisModel)) {
            categoryAxisMap.set("angle", angleAxisModel);
            result.firstCategoryDimIndex == null &&
                (result.firstCategoryDimIndex = 1);
        }
    },
    geo: function (seriesModel, result, axisMap, categoryAxisMap) {
        result.coordSysDims = ["lng", "lat"];
    },
    parallel: function (seriesModel, result, axisMap, categoryAxisMap) {
        var ecModel = seriesModel.ecModel;
        var parallelModel = ecModel.getComponent(
            "parallel",
            seriesModel.get("parallelIndex")
        );
        var coordSysDims = (result.coordSysDims =
            parallelModel.dimensions.slice());
        each(parallelModel.parallelAxisIndex, function (axisIndex, index) {
            var axisModel = ecModel.getComponent("parallelAxis", axisIndex);
            var axisDim = coordSysDims[index];
            axisMap.set(axisDim, axisModel);

            if (isCategory(axisModel) && result.firstCategoryDimIndex == null) {
                categoryAxisMap.set(axisDim, axisModel);
                result.firstCategoryDimIndex = index;
            }
        });
    },
};

function isCategory(axisModel) {
    return axisModel.get("type") === "category";
}

exports.getCoordSysInfoBySeries = getCoordSysInfoBySeries;
